Daikin RXR28KVMA Service Manual
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Daikin RXR28KVMA Service Manual

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Si001080
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
2.8/4.2/5.0 kW Class
Outdoor Unit
Inverter
Pair Type

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Summary of Contents for Daikin RXR28KVMA

  • Page 1 Si001080 REMOVAL PROCEDURE S E R V I C E M A N U A L 2.8/4.2/5.0 kW Class Outdoor Unit Inverter Pair Type...
  • Page 2 Service Manual Removal Procedure Outdoor Unit Heat Pump RXR28KVMA RXR42KVMA RXR50KVMA...

  • Page 3: Table Of Contents

    Si001080 Table of Contents 1. Removal of Humidifier Unit ..............2 2. Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor..........5 3. Removal of Humidifying Fan Assembly ..........8 4. Removal of Hygroscopic Fan Motor............11 5. Removal of Outdoor Fan / Fan Motor ...........12 6.

  • Page 4: Removal Of Humidifier Unit

    Removal of Humidifier Unit Si001080 1. Removal of Humidifier Unit Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. External appearance Humidifier unit air inlet (1) Humidifier unit Humidifier...
  • Page 5 Si001080 Removal of Humidifier Unit Step Procedure Points 3. Remove the humidifier Be sure to wait for 10 unit. minutes or more after turning off the power supply The figure shows the before disconnecting the arrangement of the connectors. relay harnesses. (R5791) Disconnect the 5 relay connectors.
  • Page 6 Removal of Humidifier Unit Si001080 Step Procedure Points Remove the 4 screws of the humidifier unit and lift it up to remove. Humidifier unit (R13984) The figure shows the When installing the positions of the humidifier unit, do not forget humidifying duct and to connect the relay the relay connectors.

  • Page 7: Removal Of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor

    Si001080 Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor 2. Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
  • Page 8 Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Si001080 Step Procedure Points Remove the 2 screws The heater assembly should and remove the heater be replaced as an assembly assembly. set. (Disassembling of the assembly may cause malfunction.) (R5800) 3.
  • Page 9 Si001080 Removal of Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Step Procedure Points Lift the humidifying A heat catalyst (black) is rotor up to remove. applied on the upper side. Humidifying rotor (Moisture adsorption element) (R13989) 4. Remove the humidifying rotor motor.

  • Page 10: Removal Of Humidifying Fan Assembly

    Removal of Humidifying Fan Assembly Si001080 3. Removal of Humidifying Fan Assembly Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the humidifying Preparation fan assembly.
  • Page 11 Si001080 Removal of Humidifying Fan Assembly Step Procedure Points Remove the The humidifying fan humidifying fan assembly should be assembly. replaced as an assembly set. (Disassembling of the assembly can cause a noise.) (R5813) Peel the seal material and pull out the humidifying thermistor.
  • Page 12 Removal of Humidifying Fan Assembly Si001080 Step Procedure Points Remove the damper assembly. Damper assembly (R13991) Remove the screw and remove the damper motor. Damper motor (R13992) Limit switch (R5819) Removal Procedure...

  • Page 13: Removal Of Hygroscopic Fan Motor

    Si001080 Removal of Hygroscopic Fan Motor 4. Removal of Hygroscopic Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the nut and Preparation remove the Remove the humidifying hygroscopic fan.

  • Page 14: Removal Of Outdoor Fan / Fan Motor

    Removal of Outdoor Fan / Fan Motor Si001080 5. Removal of Outdoor Fan / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the shield plate. Preparation Remove the humidifier unit Remove the screw.
  • Page 15 Si001080 Removal of Outdoor Fan / Fan Motor Step Procedure Points Remove the electrical box cover. (R5829) Remove the insulation Insulation sheet sheet. (R13997) 3. Remove the front panel. Remove the 7 screws. Unfasten the 5 hooks in total and remove the front panel.
  • Page 16 Removal of Outdoor Fan / Fan Motor Si001080 Step Procedure Points 4. Remove the outdoor fan. Nut size: M6 Remove the nut and remove the outdoor fan. 10 mm (R12236) When reassembling, align mark of the outdoor D cut fan with the D-cut section of the motor shaft.
  • Page 17 Si001080 Removal of Outdoor Fan / Fan Motor Step Procedure Points Remove the screw of the fan motor fixing plate. Fan motor fixing plate (R14001) Detach the upper part of the fan motor fixing plate. (R5839) Fan motor fixing plate has 2 hooks on lower part.

  • Page 18: Removal Of Humidifying Duct

    Removal of Humidifying Duct Si001080 6. Removal of Humidifying Duct Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw and remove the stop valve cover.

  • Page 19: Removal Of Electrical Box

    Si001080 Removal of Electrical Box 7. Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Release the harnesses Preparation for the humidifier unit Remove the front panel from the hook.
  • Page 20 Removal of Electrical Box Si001080 Step Procedure Points Disconnect the connector for the [S20] electronic expansion valve coil [S20]. (R14050) Disconnect the connector for the [S90] thermistor assembly [S90]. (R14009) Disconnect the connector for the humidifying thermistor [S91]. (R14051) Disconnect the 2 terminals from the reactor.
  • Page 21 Si001080 Removal of Electrical Box Step Procedure Points Disconnect the relay harness for the compressor. (R14010) Remove the screw of Thermal fuse should be the terminal board. replaced with the terminal board. You can work without removing the terminal board. (R14052) Remove the screws and disconnect the...
  • Page 22 Removal of Electrical Box Si001080 Step Procedure Points Disconnect the 4 connectors. White Red Black Green/Yellow Remove the screw and detach the earth wire. Earth (R14011) Detach the clamp for the thermistor assembly from the electrical box. Clamp (R14012) Remove the 2 screws of the electrical box.

  • Page 23: Removal Of Pcb

    Si001080 Removal of PCB 8. Removal of PCB Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 7 screws. Preparation Remove the electrical box according to "Removal of Electrical Box".
  • Page 24 Removal of PCB Si001080 Step Procedure Points Remove the 2 screws and detach the clip to remove the radiation shield plate. Radiation shield plate Clip (R14016) Cut the 3 clamps. (R5864) Remove the 2 screws. (R5865) Unfasten the 3 hooks of the electrical box.
  • Page 25 Si001080 Removal of PCB Step Procedure Points Remove the PCB from the electrical box. (R5867) Disconnect the connectors. S20 : electronic expansion valve coil S21 : humidifying rotor motor S22 : damper motor S45 : thermal fuse S70 : fan motor S72 : humidifier fan motor S80 : four way valve coil S90 : thermistor assembly...

  • Page 26: Removal Of Sound Blankets

    Removal of Sound Blankets Si001080 9. Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side Preparation panel. Remove the electrical box according to "Removal of Remove the 3 screws...
  • Page 27 Si001080 Removal of Sound Blankets Step Procedure Points Untie the strings and open the sound blanket (outer). Sound blanket (outer) (R14023) Pull the sound blanket Since the piping ports on (outer) out. the sound blanket are torn easily, remove the blanket carefully.

  • Page 28: Removal Of Thermistor Assembly

    Removal of Thermistor Assembly Si001080 10.Removal of Thermistor Assembly Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The figure shows the Preparation arrangement of the Remove the electrical box Outdoor temperature thermistor thermistor assembly.
  • Page 29 Si001080 Removal of Thermistor Assembly Step Procedure Points Pull out the outdoor heat exchanger thermistor. (R5879) Be careful not to loose the clip for the thermistor. Remove the sound Since the piping ports on blanket (top). the sound blanket are torn Sound blanket (top) easily, remove the blanket carefully.

  • Page 30: Removal Of Reactor / Partition Plate

    Removal of Reactor / Partition Plate Si001080 11.Removal of Reactor / Partition Plate Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reactor. Preparation Remove the sound blankets Remove the screw and...

  • Page 31: Removal Of Four Way Valve

    Si001080 Removal of Four Way Valve 12.Removal of Four Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw and Preparation remove the four way Remove the sound blankets valve coil.
  • Page 32 Removal of Four Way Valve Si001080 Step Procedure Points Before working, make sure that the refrigerant gas is Warning empty in the circuit. Be careful not to get yourself Be sure to apply nitrogen burnt with the pipes and replacement when heating other parts that are heated by up the brazed part.

  • Page 33: Removal Of Electronic Expansion Valve

    Si001080 Removal of Electronic Expansion Valve 13.Removal of Electronic Expansion Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw and Preparation remove the four way Remove the sound blankets valve coil.

  • Page 34: Removal Of Compressor

    Removal of Compressor Si001080 14.Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal Preparation Terminal cover cover. Remove the sound blankets according to "Removal of Sound Blankets".
  • Page 35 Si001080 Removal of Compressor Step Procedure Points Before working, make sure that the refrigerant gas is Warning empty in the circuit. Be careful not to get yourself Be sure to apply nitrogen burnt with the pipes and replacement when heating other parts that are heated by up the brazed part.
  • Page 36 Revision History Month / Year Version Revised contents 01 / 2013 Si001080 First edition...
  • Page 37 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

This manual is also suitable for:

Rxr42kvmaRxr50kvma

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